Agitator



M. M. FREDEL AND W. BOSANKD.

AenAToR. APPLICATION FILED FEB- 23, 1921.

Patented July 5, will.

` 2 SHEETS-SHEET l.

IVI. M. FREDEL AND W. BGSANKO.

AGH/WOR.

APPLICATION FILED FEB- 23, 192|.

l Patented July 59 1921 2 SHEETS-SHEET 2.

' thereof to the surface for treatment.

lfllllil..

MICHAEL M. FREDEL, OF BROOKLYN, .AND WILLIAM BOSANKO, OF RICHMOND HILL, NEW YORK.

AGITATOR.

Speccaton of Letters Patent.

Patenten @nay 5, mei.

Application filed February 23, 1921. Serial No. 447,080.

To all fw iom t may conce/rn:

Be it known that we, MinimalJ M. Fantini. and VILLIAM BosANKo, both citizens of the United States, residing, respectively, in the borough of Brooklyn, county of Kings, city and State of New York, and Richmond Hill, borough of Queens, State of New York, have invented an Improvement in Agitators, of which the following is a specification.

Gui' invention relates to an agitator and particularly to that type of agitators employed in mills for successively turning over and bringing to the surface particles of iiour or other similar material the same by bringing the surface particles into contact with a suitable gas employed for this purpose, or, as will be apparent, to otherwise treat material in passing through the agitator. Heretofore, as we are aware, various forms of agitators to which our present invention relates have been used for the same purpose. Among these agitators some of the same have been provided with a plurality of power driven cages placed within the agitator so that during the descent of the material being treated the same is turned over to bring different particles .also we are aware that it has heretofore been proposed to permit the material under treatment in its descent in the agitator to be thrown in opposite directions by transversely arranged plates placed at an angle and in superimposed positions. ln the use of lthese agitators, however, it has been found that the diifusion is incomplete and consequently unsatisfactory, and furthermore these agitators with which we have been heretofore acquainted the material under treatment is retarded in its flow, tending to choke the agitator and hence materially interfere with the quantity of material which may be handled by the agitator in a given time period.

The object of our invention is to overcome these difficulties, and in carrying out the invention we aim to provide an agitator in which the diffusion of the material is substantially perfect by dividing the material into a conical formation and in this form causing a plurality of reversals during its course through the agitator with which no motive power is required and in which the construction is such that the flow of the material is not retarded and the agitator will in order to bleachnot choke so that in the use of the machine it 1s possible to satisfactorily diffuse the material irrespective of the rate at which the same is permitted to flow through the appara'tus.

rlhe agitator made in accordance with our invention preferably comprises a casing mounted in a vertical position in a. chute or line through which the flouror other material that is to be treated is caused or permitted 'to pass by gravity. Upon entering the agitator the material under treatment is caused to take the form of a substantially cylindrical body, and by suitable devices adjustably and removably arranged in the casing as hereinafter described, the material is didused in its passage through the agitator by being directed both outwardly and inwardly relatively to the axis of the agitator a suflicient number of times to perfect the diffusion. it will furthermore be understood that while the principal form of the invention, as hereinafter described, relates particularly to a form of agitator, the invention is not limited to this particular use, as for example it may be utilized with equal advantage as an aspirator for separating grain or other material from chaff and other dirt as well as for manifest other purposes.

In the drawing:

Figure l is a side elevation of an agitator made in accordance. with our invention.

Fig. 2 is a central longitudinal cross section of the apparatus.

Fig. 3 is a sectional plan on line 3 3, Fig. 2. I

gz el is a. sectional plan on line 4 4, Fie'. 2, and

Fig. 5 is a longitudinal sectional elevation showing another formy of the invention.

Referring 'to the drawing and particuiarly to Tdigs. l to 4, the agitator made in accordance with our invention comprises a box frame or casing indicated at l0 and made of any suitable material. rilhe casing rests on a floor or other support as indicated at il and at the other end is provided with a top i2 adapted to be connected to a chute 13 in the flour line or the line of other material and in which th re is provided a door le havinga kn'obll by which, or otherwise, the door may be opened. As illustrated in the draw ing, the top member is also provided with a door 16 having a knob il" by which, or otherwise, this door maybe removed to gain vof a truncated cone.

access to the upper interior portionof the casing.

Within the .casing and at the upper end adjacent the top thereoil we employ a delector 18 which is preferably in the form This de'flector 18 is fitted .with la 'pluralityl of arms 19 extending` outwardly therefrom and adapted to be engaged in suitable supports 2O soa as to maire the deiector 18 adjustable to position in the top of the casing. rlhis is necessaryin order to determine `the'proper place forthe de flector relatively to the opening in the top 12 which is connected to the chute 13 and through which the flour or other material enters, the adjustment being determined, as will be understood, by the quantity of flour or other material which at a given time is being handled by the agitator.

In a suitable position in the casing we provide a cross bar 21 which is fixed in placetherein in any suitable manner. This cross bar 21 supports an upright rod 22 l which yextends from the cross bar upwardly 1 beV understood, however, while we haveV in a centrally disposed position through the casing and terminates at a point spaced from, but relatively near, the discharge orifice of the deiiector 18. Atthe upper' end of this rod 22 there is a detlector cone 23. Interiorly this dei'lector cone is fitted with a spider 24 having a hub 25 which is tapped to be adjustably received on the screw threaded upper end 26 oft-lie rod 22 so that the distance between the apex of the cone and the discharge Vorihce of the deilector 18 may also be adjusted, depending upon the quantity of material which is being handled at any given time by the delector. On the rod 22 there is also mounted a deflector 2T.

This is preferably a truncated cone and the wallsA thereof taper downwardly ata predetermined angle. lnteriorly the detlector 27 is iit-ted with a spider 28 having a hub 29 forV receivingthe rod 22 and the hub 29 is fitted with a set screw 30 by which, as will be understood, the position of the deflector 27 on the rod 22 may be readily determined. Also on the rod 22 adjacent the lower end" Vthereof and appreciably above the'cro'ss bar V21, we employ a deiflector cone 31. This is provided interiorly with a spider 32 having a centrally disposedhub 33 inV which there is a set screwv 34 by which the position of the delector cone 31 maybe adjusted and secured in position on the rod 22. As will shown deflector cones at the top and adjacent thebottom of the rod 22 and an intermediate truncated deector cone, any predetermined number of these intermediate cones may be employed without departing 'from the nature and spirit of the invention.

Also within the casing` we prefer to eni iploy aplurality of rods 35 preferably four in number and placed in the corners of the casing by means of brackets 36 and 37 vor otherwise. VAdjustably secured .on these rodsV we p-rovide a plurality'o' Vtrunes-.ted cones or detlectors, with the parts thcreofinclined inthe opposite directions to those of .the`

deflectors hereinbetore described. One of means oi` which this deflector may be vertically adjusted to the required position. indicated in these figures ot the drawing the agitator also includes a detlector 44 mounted on the rods Similar: to theV correspondingly molnted detlectors the de#V Y Y tlector 44 is provided with brackets 45 Vin which there are set screws 46 to secure the delector in any desiredv position on theY rods 35. Y 1

1n the use of the agitator as hereinbeiore described the viiour or other material' is forced to flow by gravitythroughthe'chuteV 13 into the casing.V YThe material first enters Y. Y

the dei'iector 18 by which, after beingv suitably adjusted, it is directed to the-.conical deflect-W23 over which itjpassesand by which it is divided into a hollowrbodyfas`V will be Vreadily understood. From the cone 23 the material is caused to iiow to theinner -side of the deflector 38 against]which'it.V

strikes and has the course ofvits flow changed from an outward to an inwardv direction.V

After passing through the detiector 38 the material is directed to the outer side oi the deiiector 37 over which it passes. Havingits Y v Y course again directedV outwardly from the deilector vthe material passes to the inner side'ot the deilector 41 irom which it passes to the deflector 44and to the conical deiiector 31 where its path is again changed. to anV f outward directionrelatively', oit course, toV the walls of the casing. From the conical deflector 31 the material is permitted-.to` fall tothe bottom of thel casing; and to vpass through the hopper '50Y leading vfrom vthe .bottom of the casingto the chute by which the material is `conveyed away :trom the agitator. Hector 18 and the cone 23 may be adjusted relatively to one anotherV to cause an evenV distribution ot theV flour or othermaterial so that when it passes over and. leaves the Y surface of the cone 23 it willbeevenly dis tributed and in leaving' the cone will do so in a hollow conical or circular body and ,thatA any number of the intermediate de'Hecto-rs, both those mounted von the Vcentraliupright rod 22 and the side rods 35may be employed to adequately effect thefdiusion of the may terial and that these parts may be adjusted' to-` cause the material to maintain its form lt willzbe understood that the detom of the hollow body while passing over and through the delectors.

In the form of the invention shown in Figs. l to 4 there is provided a gas inlet pipe 47 passing through one of the walls or" the casing and terminating in a downwardly extended nozzle 48 arranged approximately in the center of the casing with the pipe 47 passing between the deectors 4l and 44. Also beneath the conical delector 3l a similar gas pipe 49 may be passed through the casing and made to terminate in a downwardly extending nozzle 50 for the admission of chlorin or other gas to which the material may be subjected and with which it is diffused for bleaching or other purposes.

As hereinbefore stated it will be understood that while the form of agitator hereinbetore described is particularly adapted for use in diffusing flour its use is not so limited. lt may, for example, be utilized as an aspirator for separating the chal, dirt and other foreign substances from grain in cleaning thesame, as illustrated in Fig. In this form of the invention the casing is preferably made of double walls, the outer wall being` indicated at 5l and the inner wall at :52. These walls are preferably parallel to one another and extend from the bottom to the top of the casing so as to provide an air space 53. Leading from the top of the aspirator so as to connect with both the interior chamber within the walls 52 and the spaces 53 there are suction pipes 54 and 55 merging in a pipe 56 to which a blower or other suitable exhaust apparatus of suflicient capacity is connected to create the desired draft in the apparatus.

The material to be treated in the aspirator is admitted at 57 being conveyed thereto by a suitable chute or otherwise and the separated material is conveyed from the aspirator by a suitable hopper 58 at the botthereof or otherwise. Adjustably mounted at the top of the apparatus within the central chamber or the chamber within the inner walls 52 we employ a conical de l'lector 59. This is preferably mounted in an adjustable manner similar to that described in the other form of the invention in regard to the delector 18. ln this form of the invention we also employ a centrally mounted upright or rod indicated at 65 and on which there are adjustably secured a deliector cone 8O and a plurality orp deflector cones as indicate-:l at 6l, 62 and 63 and a bottom deflector G4. intermediate of these deflectors there is a second series of oppositely disposed deflectors indicated at 66, 67, 68, 69 and 70 which are secured to rods 7l in an adjustable manner similar to that hereinbefore described in connection with the corresponding delectors 38, 41 and 44 in the other form of the invention.

In the bottom of the inner chamber we employ a slide 72 which is adjustable to position to determine the amount of air admitted to the central chamber by adjusting the space between the inner surface of this adjustable slide and the periphery of the conical deflector 64, it being understood that the adjustable slide 72 may be placed in position and secured therein in any desired manner. In order to determine and regulate the strength and ratio of the air currents in the inner chamber and the spaces 53, we provide the inner walls 52, in suitable places, with doors shown, for example, at 73, and 74 and adapted to be closed or held in an open position by means of brackets 7 5 and 7 6 respectively. F or the same purpose the top member is provided with doors 77 and 78 closing the openings to the pipes 55 and 54 respectively for opening the same to any desired extent. ln the lower portion of the spaces 33 we employ an inclined partition wall as indicated at 79 making a pocket 8O at the bottom of the spaces 53 which is accessible from the exterior of the apparatus by means oi doors shown at 8l.

In the use of this aspirator apparatus the grain or other material to be cleaned is caused to pass through a suitable chute to the deilector 59 where it is divided into a hollow circularly or cylindrically disposed body by passing over the conical delector 60. F rom this in the same form it passes alternately in one direction first inwardly and then outwardly through and over the series or delectors 66 to 7() inclusive and nally passes over the conical deflector 64 to the discharge hopper 58. As will be readily apparent by the agitation edected in the material by this fall through and over the deiiectors together with the air currents passing in the opposite direction the heavier materials are conveyed away to the discharge hopper and the lighter materials separated and carried off by the draft. Also that those portions of the lighter materials which settle at the bottom of the spaces 53 may be removed therefrom through the doors 8l.

lVe have herein shown and described our invention as applied to an agitator and an aspirator as used in flour mill practice, but it will be understood that many other similar and allied uses may be found for such an apparatus, as for example it might serve admirably as a water cooling tower in which case it might be employed with or without a casing. lt will also be understood that the pitch or angle of the deflectors depends upon the use to which the apparatus is put, the pitch being much greater in the agitator' than in the aspirator, as herein shown and described.

We claim as our invention:

l. In an apparatus of the class described, means causing the material under treatment closed hollow wall formation,and a plurality of circular alternately arranged deflectors through and over which the material is caused 'to flow and to maintain its circularly disposed completely closed hollow wall forn Y mation throughout its passage through the apparatus to adequately agitate the same.

ln `an apparatus of the class described,

devices for causing material under treatment to assume a hollow completely closed wall formation, a plurality offdevices over which the material is caused to flow, meansfor adjusting said devices to position, a plurality of devices intermediateof the aforesaid devices through which the said material is caused to liow, and means for adjusting` the said Vintermediate devices to position, the

material being caused to maintain its hollow completely closed wall formation in passing over and through all of the aforesaid devices. Y Y' 4. An agitator for ltiour and like material, comprising a casing, means for causing flour to iiow to the casing, means for causing the flour upon entering the casing to assume a hollow completely closed wall formation, and a plurality of devices within the casing over and through which the saidjflourV is caused to flow in alternate inward and outward directions and is maintainedv in its hollow completely closed wall formation in its passage over and through the said devices to thoroughly agitate the flour.

V5. An agitator for liiour and like material,

comprising a casing, a conical deflector ad-` justable to position adjacent the top of the casing, a deflcctor universally adjustable laterally to position at the top of the casing and by which the flour is conveyed to the upper surface of the conical deflector for causing the flour to assume the formation ofV a hollow stream with a' completely closed wall, and devices adjustable to 'position in the casing and through which and over which th'e'flouris caused to pass alternately in opposite directions to agita-te the Ysame vwhile maintaining' said formation. V

6. An agitator for iiour and like material, comprising a casing, a conical deflector adjustable to position adjacent the top of the casing, a deilector universally adjustable laterally to position at the top of the casing and by which the flour is conveyed to the upper surface of the conical deflector for causing the Vflour to assume'the formation of a hollow stream withv a completely closed.

wall, a plurality of deflectors associated'with theV aforesaid conical deflector and adjustable Vrelatively thereto on the surface uof which the flour passes in one direction, and al plurality of deflectors. intermediate ofthe aforesaid dellectorsV adjustable to Vposition and through which the flour iscaused topass in Y the opposite direction in liowingin the hol;

low stream and closed v wall formation throulgh the casing. Y

centrally of the casing, a conical deflector adjustably mounted` at the upper end of the upright, a deflector universally adjustable n agitator for flour and like material,`r comprising a casing, an upright mounted laterally to position at the top of the-casing J relatively to theapex of the said conical deiector in order that flo-ur passingthrough the said deilector to the conical d'eflector may be distributed evenly thereby and causedito leave the same in the form of Va hollow ystream with a completelyV closed wall dand devices associated with the aforesaid Vdeflectors whereby. the hollow stream withV closed wall formation of flour isfalternately passed in opposite directions to effect-its agitation in the-apparatus.

S. An agitator for iourrand like material,

comprising a casing, an upright mounted centrally of the casing, a conical deflector adjustably mounted at the upper end ofthe Y upright, la deflector universally adjustable Y laterally to position at the top of the casing relatively to the apex ofthe said conical deflector inY order that flour passing through the said deflector Vto the conical deflector may be distributed evenly thereby andcaused to leave the same in the form of a hollow stream with va completely closed wall, a plurality of deflectors also adjustableto position-on the said upright and over whichthe hollow stream of flour-is caused to pass in an outward direction relatively to the casing,

and a plurality of deflectors adjustably mounted intermediate of the aforesaid deflectors and by which the flour is caused'to move in an inwardldirection relative to the casingin passing through the same.

9. An agitator for flourY and like material,V

comprising a casing, an Vupright mounted centrally ofthe casing, la conical deflector adjustably'mounted at the upper end of the upright, a deliector universally adjustable laterally to position at the top of the casing relatively to the apex of the said lconical deflector in order that flour passing through Y the said deflector 'to the "conical deflector may be distributed evenly thereby and caused to leave the same in the form of a hollow'stream with a completely closed wall, a plurality ofV deflectors also adjustable to position on the said upright and over which the hollow stream of flour' is caused to pass in an outward direction relatively to the casing, a plurality of rods mounted in the casing adjacent the walls thereof, and a plurality of deflectors adjustably connected to the said rods and placed intermediate of the deflectors mounted on the upright and through which the Hour in passing in its hollow stream form is caused to iiow in an inward direction relatively to the casing.

lO. In an apparatus of the class described, means causing the material under treatment to assume a hollow completely closed wall formation, a plurality of devices through and over which the said material is alternately caused to flow and to be maintained at all times during its flow through the apparatus in its hollow completely closed wall formation to agitate the material, and means for passing a gas into the hollow body of material under treatment.

11. In an apparatus of the class described, devices for causing material under treatment to assume a circularly disposed Completely closed hollow wall formation, a plurality of circular alternately arranged deflectors through and over which the material is caused to flow and to maintain its circularly disposed completely closed hollow wall formation throughout its passage through the apparatus to adequately agitate the same, and means for passing a gas into the hollow body of material underv treatment.

12. In an apparatus of the class described, devices for causing'- material under` treatment to assume a hollow completely closed wall formation, a plurality of devices over which the material is caused to flow, means for adjusting said devices to position, a plurality of devices intermediate of the aforesaid devices through which the said material is caused to flow, means for adjusting the said intermediate devices to position, the material being caused to maintain its hollow completely closed wall formation in passing over and through all of the aforesaid devices, and means for passing a gas into the hollow body of' material under treatment.

13. An agitator for flour and like material, comprising` a casing, an upright mounted centrally of the casing, a conical deflector adjustably mounted at the upper end of the upright, a deflector universally adjustable laterally to position at the top of the casing relatively to the apex of the said conical deector in order that our passing through the said deflector to the conical delector may be distributed evenly thereby and caused to leave the same in the formV of a hollow stream having a completely closed wall, a plurality of deflectors also adjustable to position on the said upright and over which the hollow stream of fiour is caused to pass in an outward direction relatively to the casing, a plurality of delectors adjustably mounted intermediate of the aforesaid deflectors and by which the Hour is caused to move in an inward direction relative to the casing in passing through the same, and pipes passing through casing and terminating in downwardly extendingnozzles within the hollow stream of flour.

'Signed by us 11th day of February, 1921.

MICHAEL M. IPREDEL. WILLIAM BOSANKO. 

